History

First called High Land, the town's name was changed to Burgdorff Siding, sometimes called Bergdorf Switch (after a railroad worker who had been killed in an accident), before it acquired its current name in 1897. The town was named after Alexander Ault, a Fort Collins, Colorado resident and owner of a flour mill. Mr. Ault had helped to avert financial disaster to the agricultural base by purchasing the entire grain harvest during a year of severe economic hardship. The town was incorporated in 1904.

Much of the residential area of the town, as well as surrounding farmland, is on land given by the United States government to the Union Pacific Railroad, to be sold to finance railroad construction. A north-south segment of the railroad connecting Denver, Colorado, and Cheyenne, Wyoming, passes through the town, parallel to U.S. Highway 85.
On February 21, 1910, Rabbi I. Idleson of Denver, Colorado, purchased for farming purposes near Ault, proposing "to employ Jewish farmers and devote land to practical philanthropy". Little came of this venture, and within a few decades there were apparently no Jewish residents in the town.